Subaru 1600 Service Manual page 46

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ENGINE
9. Service Data
Head surface warpage
Limit 0.05mm (0.0020 in)
Head surface grinding Limit
O.5mm (0.020 in)
Standard height 1600 89.6mm
(3.528 in)
"0
1800 90.6mm
(3.567 in)
."
Valve seat
Refacing angle
90°,150°
CI,)
.s::
...
Contacting width Intake 0.7 -
1.3
mm (0.028 - 0.051 in)
CI,)
"0
:Ei
>.
Exhaust 1.0 - 1.8 mm (0.039 - 0.071 in)
u
Wear limit O.5mm
(0.020 in)
Valve guide
Inner diameter 8.000 - 8.015 mm (0.3150 - 0.3156 in)
Protrusion Intake 17.5-18.5mm (0.689 - 0.728 in)
Exhaust
22.5 - 23.5 mm (0.886 - 0.925 in)
Valve overall length Intake l09mm (4.29 in)
Exhaust 109.3 mm (4.30 in)
Valve head edge thickness
Intake STO
1.0mm (0.039 in)
Limit O.5mm (0.020 in)
Exhaust STO 1.3 mm
(0.051 in)
~ Limit
0.8mm (0.031 in)
7iI
Stem diameter Intake 7.950 - 7.965 mm (0.3I30 - 0.3136 in) >
Exhaust 7.945 -7.960mm (0.3128 - 0.3134 in)
Stem oil clearance Intake
STO
0.035 - 0.065 mm (0.0014 - 0.0026 in)
t
Limit 0.15 mm
(0.0059 in)
Exhaust
STO 0.040 - 0.070 mm
(0.0016 - 0.0028 in)
Limit 0.15 mm (0.0059 in)
• With solid valve lifter
Free length
Outer spring 45.3 mm (1.783 in)
Inner spring 48.8mm (1.921 in)
Tension/spring height Outer spring 146.1 - 169.7 N/39.5 mm
(14.9 - 17.3 kg/39.5 mm,
32.9 - 38.1lb/1.S55 in)
500.2 - 568.8 N/30.5 mm
(51.0 - 58.0 kg/30.5 mm,
~ 112.5 - 127.91b/1.201 in)
'J:
Inner spring 84.3 - 98.1 N/37.5 mm
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(8.6 - 10.0 kg/37.5 mm,
>
19.0 - 22.11b/1.476 in)
185.4 - 214.8 N/285 mm
(18.9 - 21.9 kg/28.5 mm,
41.7 - 48.31b/1.122 in)
Square ness Outer spring
2.0 mm or less (0.079 in or less)
Inner spring
2.1 mm or less (0.083 in or less)
• With hydraulic valve lifter
Free length Outer spring 48.5 mm (1..909 in)
Inner spring 53.0mm (2.087 in)
3-9